VkPresentScalingFlagBitsEXT

Bits which may be set in VkSurfacePresentScalingCapabilitiesEXT::supportedPresentScaling, specifying scaling modes supported by the surface, are:

typedef enum VkPresentScalingFlagBitsEXT {
    VK_PRESENT_SCALING_ONE_TO_ONE_BIT_EXT = 0x00000001,
    VK_PRESENT_SCALING_ASPECT_RATIO_STRETCH_BIT_EXT = 0x00000002,
    VK_PRESENT_SCALING_STRETCH_BIT_EXT = 0x00000004,
} VkPresentScalingFlagBitsEXT;

• VK_PRESENT_SCALING_ONE_TO_ONE_BIT_EXT specifies that no scaling occurs, and pixels in the swapchain image are mapped to one and only one pixel in the surface. The mapping between pixels is defined by the chosen presentation gravity.
• VK_PRESENT_SCALING_ASPECT_RATIO_STRETCH_BIT_EXT specifies that the swapchain image will be minified or magnified such that at least one of the resulting width or height is equal to the corresponding surface dimension, and the other resulting dimension is less than or equal to the corresponding surface dimension, with the aspect ratio of the resulting image being identical to that of the original swapchain image.
• VK_PRESENT_SCALING_STRETCH_BIT_EXT specifies that the swapchain image will be minified or magnified such that the resulting image dimensions are equal to those of the surface.